Dr. Marshall at McGovern Allergy & Asthma Clinic

Dr. Zachary Marshall

Board Certified Physician

Caring for patients is undoubtedly the best part of my job. It is so rewarding and humbling to get a chance to be a part of patients’ lives, to participate in their healthcare, and to work alongside the patient toward accurate diagnosis and effective treatment of their health issues.

- Dr. Zachary Marshall

Getting to Know Dr. Zachary Marshall

"Dr. Marshall and his supporting staff are really top notch! He’s very personable and informative. Answered all my questions thoroughly and laid out options that gave me choices. He also has a charming sense of humor that’s sorely missed in health care."
- Grant T.
"Dr. Marshall is one of the most informed doctors that I’ve seen. He is very caring and compassionate."
- Annette
"Dr. Marshall was very informative. He listened to my story about my allergic reaction and figured out what was going on immediately. I left with a plan on how to tackle future reactions and felt much safer with what I learned!"
- Emmet H.

Dr. Zachary Marshall, M.D.

Dr. Zachary Marshall is board-certified in Allergy, Immunology, and Internal Medicine, treating both adults and children. A native Texan, Dr. Marshall graduated from Rice University, the University of Texas Medical School in Houston, and Baylor College of Medicine, where he completed his internal medicine residency and clinical postdoctoral fellowship in allergy and immunology. His fellowship research focused on fungal inflammation of the airway and in vivo models of drug allergy. Dr. Marshall’s clinical interests include rhinitis, asthma, environmental allergies, food and drug allergies, hives, eczema, and immune disorders. Dr. Marshall also has a particular interest in the medical humanities and has written on the importance of the doctor-patient relationship. “In this electronic age of increasingly depersonalized care, we must not forget that health and healing occur only at the level of the individual patient and only with collaboration. Our efforts are best invested in the lives of people, and there is no greater progress than to improve the life of another.” – Dr. Zachary Marshall